Concrete-building apparatus.



H. RElTlNGER.

CONCRETE BUILDING APPARATUS.

APPLICATION FILED lUNE 18. 1915.

Patented Jan. 11, 1916.

3 SHEETS-SHEET 1- A PLANOUR'KFHCOUWASHINGTON D c H. REITINGER.

CONCRETE BUILDING APPARATUS.

APPLICATION FILED JUNE 18. 1915.

1 16x595, Patented Jan. 11, 1916.

3 SHEETS-SHEET 2.

H. REITINGER.

CONCRETE BUILDING APPARATUS.

APPLICATION FILED JUNE18, 1915.

1,167,595. Patented Jan. 11, 1916.

3 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH C0.. WASHINGTON, I), c

HENRY REITINGEE, OF CHICAGO, ILLINOIS.

CONCRETE-BUILDING APPARATUS.

memes.

Application filed June 18, 1915.

To all whom it may concern:

Be it known that I, I-IEXRY REITINGER, a subject of the Emperor ofAustria-Hungary, residing at 2340 Clifton avenue, in the city ofChicago, county of Cook, and State of Illinois, have invented certainnew and useful Improvements in Concrete-Building Apparatus, of which thefollowing is a specification.

My invention relates to improvements in concrete building apparatus andmore particularly to apparatus of this class which is used to erectsmoke stacks and similar structures.

The principal objects of my invention are to increase the rapidity ofthe erection of hollow structures of concrete, to lessen the dangers tothe workmen incident thereto, to make provision for adjustment to enablethe structure to be tapered, to build the structure by superposingsection upon section, to perform all building operations from theinterior of the apparatus, and to provide a strong, rigid and eflieientsupport for the exterior and interior of the structure while thematerial is setting. These and other objects I accomplish as hereinafterdescribed and as particularly pointed out in the appended claims,reference being had to the accompanying drawings in which a preferredadaptation or embodiment of my invention is shown.

In the drawings: Figure 1, is a top plan view of my improved apparatus.Fig. 2, represents a side elevation of the apparatus, a portion alsobeing broken away on a ragged line which extends in a general verticaldirection and cut out on a section taken vertically and longitudinallyto expose the interior construction. Fig. 3, is a top plan view of theinner shell of the apparatus. Fig. 4, is a side elevation of the innershell of the apparatus. Fig. 5, is a detached top plan view of thecentering ring, also showing a horizontal section through the interiorsupport and a plan of the radial adjustment bars. Fig. 6, is a detachedenlarged side elevation of one of the segmental plates of the outershell. Fig. 7, is a detached side elevation of two sections of thecentering ring. Fig. 8, is a fragmentary enlarged top plan view of theouter shell and its reinforcing ring. Fig. 9,.is an enlarged section online X-X Fig. 11, to illustrate the door construction inthe inner shell.Fig. 10, is an Specification of Letters Patent.

'- sectional ring shown in Fig.

Patented Jan. 11,1916. Serial No. 34,792.

enlarged fragmentary sectional view taken on a vertical longitudinalline through an upper portion of the apparatus to illustrate the mannerof adjusting the shells relatively to each other. Fig. 11, is a detachedenlarged side elevation of one of the segmental plates of the innershell. Fig. 12, is an enlarged detached detail view of the hingedsectional ring for reinforcing and stiffening the inner shell. Fig. 18,is an enlarged detached perspective view of one of the adjusting clamps.Fig. 14, is a de tachecl enlarged end elevation of the hinged Inreferring to the adaptation or embodiment of my invention shown in theaccompanying drawings in detail, like numerals designate correspondingparts.

My improved apparatus for erecting concrete smoke stacks or similarstructures in brief comprises inner and outer shells which are separatedsufliciently to provide an annular space in which the concrete is pouredand permitted to harden to form a section of the concrete structure.

I prefer to construct both the inner and outer shells of a series ofseparate segmental plates and to suitably secure these segmental platestogether in annular form.

The outer shell as shown in the drawings consists of a series ofsegmental plates 1, each of which have their side edges eX- tending at aslight diverging angle from the top to the bottom of the plate as shownin Fig. 5, so that the shell gradually tapers or lessens incircumference from the bot tcm to the top thereof substantially asillustrated in Fig. 2. The segmental plates 1, are detachably secured toeach other with their side edges in abutting position by fasteningstrips 2, which are lapped over the seams between the plates andfastened upon the exterior thereof by bolts. screws or other suitabledevices 3. These strips preferably have their side margins bentoutwardly to form radial stiffening and strengthening flanges 2. Toadditionally secure and stiffen the upper portions of the segmentalplates, a top ring is clamped around the said plates as shown in Fig. 8.I prefer to construct this top ring in a plurality of sections each ofwhich has a curved intermediate bcdy 4, and inwardly extending endportions 5, and to adjustably connect said end portions by screw bars 6.Each screw bar 6, is provided with a hexagonal or other suitably shapedmedial part 7, upon which a turning tool can be fitted for the purposeof rotating the screw bar and thus adjusting the top ring incircumference.

It may be desirable to reinforce and stiffen the lower and intermediateportions of the outer shell by encircling rings constructed similar tothe top ring heretofore described.

The inner shell is constructed also in a series of segmental plates 8,which are tapered to correspond to the taper of the segmental plates ofthe outer shell and are fastened together by strips 9, which are lappedover the interior of the seams between the plates 8, and secured theretoby bolts 10, or other fasteners. The strips 9 have their marginal sidesbent inwardly to form inner stiffening flanges 9, similar to the flanges2, previously described. The plates 8, of the inner ring are alsoreinforced and stiffened by rings which I prefer to make in a series ofhinged or pivotally connected segments 11, which are curved as shown inFig. 12, to correspond to the annular form of the ring. To provide meansfor circumferentially expanding or contracting these rings curved strips12, of metal are extended between and adjustably fastened to the endsegments 11 by bolts 13. In this connection it should be noted that theend segments 11, of the rings are not hinged or pivoted together and areseparated from each other as shown in Fig. 12. Two of these rings arepreferably employed, one being located near he top and the other nearthe bottom of the inner shell, and both being supported in angularbrackets 14:, fastened to the inner surface of the inner shell, see Fig.2.

As the shells are sometimes constructed too long to permit the spacebetween them to be filled with concrete poured in from the top, withoutdanger of bulging the plates of the outer shell, I prefer to provide thesegmental plates of the inner shell or one or more of said plates withsuitable intermediate openings through which the concrete may be poured.These openings are normally closed by doors 15, constructedsubstantially as shown in Figs. 9 and 11, which are fitted in saidopenings flush with the exterior surface of the segmental platescomposing the inner shell, see Fig. 9. The doors are provided withoffset end portions 16, which lap over the interior of the plates andare securely fastened in place by bars 17, which extend across the innerface of the doors and have their ends fitted in brackets or hooks 18,attached to the plates.

To enable the walls of the stack to be constructed of substantiallyuniform thickness throughout it is necessary to center the inner andouter shells with each other and to maintain them in their centeredposition while the sections of the stack are being constructed. For thispurpose I prefer to utilize the centering ring shown in Figs. 1, 2, 5, 7and 10, which is smaller in circumference than the inner shell and isconnected to both the inner and outer shell by a series of i are fittedto detachably fasten the segments together in circular form.

Referring to Fig. 7, the segments are provided with substantiallyJ-shaped'slots 22, for the reception of the inner portions of adjustmentbars 23. 23, are screw threaded and are provided with two oppositelydisposed butterfly nuts 2&, near their inner ends which engage againstopposite sides of the ring segments when the adjustment bars are fittedin the slots 22, as shown in Figs. 2 and 10. Each adjustment bar 23, issecured at an intermediate point to the top of the inner shell by aclamp which is constructed substantially as shown in Fig. 13, and has abody 25, provided with an opening 26, through which the adjustment baris fitted, a top set screw 27, for locking the adjustment bar in saidopening and a bifurcated lower portion 28, which straddles the marginaltop portion of the inner shell substantially as shown in Fig. Theadjustment bars are also secured at or near their outer ends to theouter shell by means of brackets 29. which are continuations of thestrips extending beyond the top of said shell, said brackets beingprovided with openings through which the adjustment bars are fitted andoppositely disposed nuts 30, are arranged on the bars between which thebrackets 29, are clamped.

The centering ring is mounted in encircling position around a suitablesupport or scafiold 31, arranged within the inner shell which also,serves as a support for the workmen engaged in building the concretestack. The scaffold 31, is preferably constructed of wood and is of atemporarycharacter, it being removed after the stack is built.

In constructing a smoke stack or other structure with my improvedapparatus, the inner and outer shells are built up of segmental platesto the proper size and are centered relatively to each other by thecentering means previously described, the scafiold is built within theinner shell, the lower portion of the annular space between the shellsis now filled with concrete poured through the openings in the plates ofthe inner shell, the upper portion of said annular space is filled withconcrete poured over the top edge of the inner. shell and the concreteis per mitted to set and harden. After is has sufficiently hardened, theinner and outer shells are loosened and moved up ard and are thuscontracted in circumference to rest The adjustment bars I upon the firstsection. The scaffold is built up higher Within the shells and thesecond section of concrete is poured. These operations are repeateduntil the stack is built to the required height, after which theapparatus and the interior scafl old are removed.

The chief advantages of this improved apparatus are that the apparatusis quickly set up or taken down, that all the work of pouring isperformed from the interior, and that a perfectly straight verticalstack can be erected.

While the shells shown in the drawings are of annular form, it should beunderstood that my improved apparatus is equally adapted for buildingstacks or other structures of square or other shapes in cross section,the only change required being in the form of the shell.

While I have illustrated and described a preferred form of constructionfor carrying my invention into effect, this is capable of a Wide rangeof variation, alteration, modification and change without departing fromthe spirit of my invention, I therefore do not wish to be limited to theconstruction herein shown and described, but desire to avail myself ofall such variations, alterations, modifications and changes as fairlyfall within the scope of the appended claims or may be construed to bewithin the scope thereof by involving the doctrine of equivalents.

lVhat I claim as my invention and desire to secure by Letters Patent is:

1. In an apparatus of the class described, an inner shell, an outershell surrounding said inner shell and separated therefrom to leave anintervening space in which concrete may be poured, and means forcentering said shells relatively to each other, comprising a centeringring, radial adjustment bars pro jecting from said centering ring, andprojecting elements on the inner and outer shells through which theadjustment bars fit.

2. In an inner shell, an outer shell surrounding said inner shell andseparated therefrom to leave an intervening space in which concrete maybe poured, a support within the inner shell, a centering ring of smallerdiameter than the inner shell attached to and arranged above saidsupport, adjustment bars adjustably connected at their inner ends to thecentering ring, a bifurcated clamp straddling the top edge of the innershell and having openings through which the adjustment bars pass andvertical extensions on the outer an apparatus of the class described,

Zhell through which the adjustment bars are 'tted.

3. In an apparatus of the class described, an inner shell, an outershell, a centering ring of smaller circumference than the inner shelland having a plurality of J-shaped slots, adjustment bars adjustablyfitted in the J-shaped slots and projecting radially outward, andvertically projecting elements on the inner and outer shells forrespectively and separately connecting the adjustment bars thereto.

4. In an apparatus of the class described, an outer shell comprising aplurality of seg mental plates, means for detachably securing saidsections together, and a circumferentially adjustable reinforcing ringencircling said plates; said ring being composed of sections havingcurved bodies and radial inwardly extending end portions, and screw barsextending between and adjustably connecting the end portions of saidsections.

5. In an apparatus of the class described, an inner shell comprising aplurality of se mental plates, brackets adapted to the inner surface ofsome of said plates, and reinforcing rings supported in said brackets,said rings being composed of hinged together sections.

6. In an apparatus of the class described, an inner shell comprising aplurality of segmental plates, brackets adapted to the inner surface ofsome of said plates, and reinforcing rings supported in said brackets,said rings being composed of a series of hinged together sections and anadjusting piece extending between and adjustably fastened to the endsections.

7. In an apparatus of the class described, an inner shell, an outershell surrounding said inner shell and separated therefrom to leave anintervening space in which concrete may be poured, a support within theinner shell, a centering ring attached to said support, and having aplurality of slots, radial adjustment bars adjustably fitted in theslots, clamps for adjustably securing said bars to the inner shell, andbrackets for adjustably securing said bars to the outer shell.

In testimony whereof I have hereunto affixed my name in the presence oftwo witnesses.

HENRY REITIN GER.

Witnesses:

HENRY HELD, F. B. RAMSEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

